Cap for pneumatic-tire valves



, W. RL-ROYER. -CAP FOR PNEUMATIC TIRENALVES. APPLICATION FILED FEB. B{V\'921.

Patented Mar. 7, 1922 [ave/2hr I 4 em, 3y Aiforzze ys r ce.

-WII'LIAM R; BUYER-OF WILKFS-BARRE, PENNSYLVANIA.

car ron PNEUMATIC-TIRE vA'Lv'es.

To all whom it may concern:

Be it known that I, WILLIAM R. Rome, a citizen of the United States of America, residing at Wilkes-Barre, in the county of LuZerne and State of Pennsylvania, have invented certain new and useful Improvements in Caps for Pneumatic-Tire Valves, of which the following is a full, clear, and exact description.

his invention relatesto caps for pneumatic valves, and its chief object, briefly a' cap which will permit inflation or deflation of the tirewithout removal of the-cap, inflation being accom plished'merely by pressing the air hose nozzle upon the cap itself. A further object is p to provide a cap which,.although permitting 1 nally, so as to be inflation or deflation Withoutremoval, will obviate the'necessity of using the customary dust cap. Still another object is to provide for the purpose described a device of simple character which can be manufactured at relatively low cost. To this and other ends the invention consists combinations hereinafter described.

In the preferred \form of the invention I provide a member in the form of a tubular nipple, which is at one end threaded interscrewed down firmly upon the usual reduced outer end of the valve stem. Secured on the 'outerend of the nipple in any convenient manner is' an open topped cup, and in the latter is asliding rod which extends through the bottom of the cup into the nipple, and can be depressed to depress the valve plungerof the valve stem. The plunger actuating rod is normally held in vertical position by a helical spring surrounding it, and

on its top is pivoted a short armcarrying on its outer end a convex bead or button. Enclosing. the to slide on the neck of the mpple is an in: verted cup having at its outer end an air port with which the aforesaid button cooperates as a closure. The spring serves also to hold the button seated in the air port and to hold the cap in raised position. When, however, the cap is depressed. against the tension of the spring, the button or closure is f cammed out of the air port and the rod is depressed, thereby depressing, the, valve plunger and opening a path for air into or out of the tire.

The embodiment outlined above is illustrated. in the accompanying drawings, in which V Fig. 1 is a sectional view showing the de- Specification '1 Letters -Patent.

Application filed February 8, 1921.

in the novel features and of rubber wh h ger 19 and depress the same,

cap, and arrangedv bottom of the yielding or flange 26 on the upper end Patented Mar. 7, v1922. serial No. 443,416.

vice mounted onthe valve stem of a pneumatic tire, with the parts in their. normal positions, the cap and rod being raised and the air port closed,

Fig. 2 is a sectional view similar to Fig. 1, but showing the cap and rod depressed andthe closure cammed out of the air port. Fig. 3 is a side view showing thev cap locked in depressed position for deflation of the tire.

-Fig. 4 is a sectional view illustrating a modification of the form shown in, Fig. 1. Fig. 5 is a sectional view of the form illustratedin Fig. 4, but showing the cap'and rod in H depressed position with open. A g

The device 10, preferably in theform of a tubular nipple, has its lower end threaded on the inside and when in use is screwed upon the reduced outer end 11 of the valve 'stem 12, the nipple ter.

On top of the nipple or device 10 is a cylindrical cup 15 having on its bottom a neck 16 by which it is secured in place. This cup may be made of metal, as are the other parts described, but preferably it is composed ie is yielding but yet rather stiff so as to give the cup a certain amount of rigidity- In the cup 15 is a slidin 17 extending into the body of the nipp e, so thatwhen the rod is depressed its lower end, which may be enlarged for the purpose, indicated at 18, will engage the valve plunthereby openas will be readily understood. is normally held against-the neck l6 by the tening the valve, The head 18 slon spring hereinafter air from the tire, cannot escape through the neck 16, leakagearound the bottom of the nipple being prevented by the gasket 14 already descrlbed. I

The rod 17 is. provided with a T-head 20, onwhich is pivoted a'short arm 21 termi mating in a convex button 22. ing an air port 24 is provided to enclose the cup and the inner rod, the'cap being fitted y to thecup but adapted to slide very thereon. At its bottom the cap has a tica l exclude water, dirt, or other foreign mat-5 described, so that even if the valve in the stem 12 be defective,

the air. port.

A cap 23 havflange 25 which, in cooperation with a bead of the nipple prevents'remo'val oi the cap. The flange 25 may usually be formed byspinning the outer end of the cap vided on the rod of the nip'ple when the cap is'depressed, as

' nozzle on the end the cap, so that the cap may a closure for the air metal down upon the'nipple after the parts are assembled.

The-rod 17 tion by a coil spring 2 the'lower end of which bears ona metal washer 28 in the bottom ofthecup. I At the top the spring engages the T-head 20 and'has its extrem1ty 29 extended into contact with the closure button 22, so that normallyrthe parts'willbe held inthe position illustrated in Fig. 1,

that is, with the cap and rod raised and with p ithe Closure 22-held yieldingly 1n the air port. g

It will be observed that the closure 22 is convex and that the edges of the air port ,2 l are beveled. Consequently, depressed the rod 1 7 will pressed also," but the closure 22 will be cammed out of the airport, the arm 21 rocking on the T-head 20 against the tension of the spring 29. .Theparts are then'in the position shown in Fig.2 and are caused to assume such position i of the air-hose is in practice applied to the 23 and pressed: down with sufiicient force to overcome the tension of the spring. To permit deflation of the tire when desired, without the necessity o holding the cap down,

not only :be deshown) which operate with a bayonet slotz31 in the edge of pressed position,'as clearly' shown in Fig. 3. In the modification shown in 4.and

5,"the inner cup 15 (Fig. 1) is omitted, and

in lieu of the lower head 18, whichwhen the parts are raised is seated against the bottom of the neck 16, a tapered plug 32 is properedseat 33 in the neck of the nipple 1,0. I also provide on t a. shoulder 3 under whichmay be placed a asket y3 5 to cooperate with the upper end in' Fig. 5, to open the tire valve.

It is to be understood that the invention isnot limited to the specific constructions hereindescribed, but, can be embodied. in other forms without departurev from its 1.. In adevice for the purposevdescribed, the combination with the valve stem of a pneumatic tire, having a valve plunger, 0 a member mounted on the valve stem, a ro movable longitudinally in the said member to depress the valve plunger, a depressible cap enclosing the rod and having an air port, an arm pivoted on the rod and having sociated with the rod to hold the ca and rod in rest position with the air port 0 os'ure seated in said port.

is held normally rest posiof the same by "the combination witha pneumatic'tire valve "stem having a valve plunger, 'ble cap associated with the valve stem and when the cap is "having an air port, a rod in the by the spring by the pressure of the (not secured on the stem,

valve plunger, the neck of the nipple 10'is provided with abayonet stud 30 to cobe locked in deby the spring and adapted "to be shifted out a of the port by depression of the cap.

17 to cooperate with a ta the inside of the cap 15".

' having an air port,.an'd a closure for the air port, and a spring as- 2.];n a device for the -,purposle=described,

the combination with a pneumaticftirefvalve stem'having a valve plunger,-'of ade'p'ressible normally raised cap'associated with the valve stem and having an.air port, a "normally raised plunger-actuating rodenclosed by the pivoted on therod and having a closure normally seated in the air port but movable out depression of th'e'cap, and a spring associated with the rod and armto hold the same and the cap in normal p.osi-. tion; I

3. Ina device for pressibletherewithto engage and depress the valve plunger, a spring-arranged to. hold the rod and cap'in raised position, and a closure for the air port, normally heldtherein but adapted to be shifted out of the port by depression of the cap. 4. In a device for the purpose described, the combination with a pneumatic tire valve.v stemlhaving a valve plunger, of amember a rod movable longitusaid member to depress the a depressible cap enclosing air port, a spring associated with the rod to maintain the same. yieldingly infraised position, and a closure for the airport, normally held in said port dinally through the rodand having an 5; A device ror thepurpose described, comprising a nipple adapted to be, seated on the end of a valve stem, a rod 'movable 1011-. gitudinally. through the outer end of the nipple to depress the plunger stem, a spring normally raised position, a caplslidable on the nipple and enclosing the plunger and spring-and port, movably. mounted on the rod and adapted to be cammed out oftheport to open the sameby depression of the cap..

6. A device for ,the purpose described, comprising'a nipple adapted to be seated on the end of a valve stem, a'rod movable ion gitudinally through the outer end of the nipple to depress the plunger of thevalve stem, a spring normally holding the rod in raised position, a cap slidable on the nipple and f. enclosing the rod and spring and having an for the air port, piv- 'oted on the rod and adapted tobe cammed the same by depres- I 125. whereof I hereto'aflix my I air port, and a closure outof the port to open sion of the cap. i

In testimony signature.

WILLIAM R. sortie.-

cap and depressible therewith, an arm I the purpose described, of a .dep're'ssicap and de- '16s of the valve holding the rodin- 

